I got two of these from a guy that no longer had an R50 but he didn't say what they were. Are they LCA bushings? It's the only thing I could think of and I haven't found pictures of oem bushings without brackets.

http://imgur.com/a/25lLM

 

definitely not a control arm bushing, looks like maybe a lower engine mount and maybe a transmission mount?

LCA bushings will have a hexagonal opening in the center of the bushing

 

Thanks, now that I look again it does look like an aftermarket bushing that goes in the stock housing.

 

hard to say since i cant see the scale of the piece, but looks like the lower engine mount insert, the smaller of the 2.